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<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<link rel="stylesheet" href="css/index1.css"/>
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	<body>
		<h1 style="background-color: aliceblue;"">CSS3动画渐入效果</h1>
		<div style="--i:1;background-color: aliceblue;">创建动画</div>
		<div style="--i:2;background-color: aliceblue;">动画定义</div>
		<div style="--i:3;background-color: aliceblue;">动画执行</div>
		<div style="--i:4;background-color: aliceblue;">动画填充</div>
	</body>
</html>